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Observations and Modeling of Profile Soil Water Storage above a Shallow Water Table

^a Dep. of Civil and Environmental Engineering, University of South Florida, 4202 East Fowler Avenue, ENB 118, Tampa, FL 33620
^b South Florida Water Management District, West Palm Beach, FL 33406

View larger version (14K): [in a new window]   Fig. 1. Profile soil water storage above a shallow water table at depth d is represented by the hatched area.

View larger version (23K): [in a new window]   Fig. 2. Water-table depth showing periods of saturation at the land surface.

View larger version (19K): [in a new window]   Fig. 3. Soil moisture response 2 d following a storm occurring on 22–23 Feb. 2002.

View larger version (13K): [in a new window]   Fig. 4. Dimensionless soil water storage capacity (SWSC) equation where I* equals the normalized soil storage and d* equals the normalized water-table depth.

View larger version (20K): [in a new window]   Fig. 5. The soil water storage capacity (SWSC) equation applied to two Floridian soils. The SWSC was estimated through the numerical integration of Eq. [2] using water retention data. The solid lines show the fit of Eq. [5] to these data.

View larger version (19K): [in a new window]   Fig. 6. Influence of encapsulated air on estimated profile soil water storage.

View larger version (23K): [in a new window]   Fig. 7. The solid line is Eq. [5] with parameters estimated by optimizing soil storage from retention data. Observed soil moisture probe storages (triangles) without correction for air are superimposed.

View larger version (18K): [in a new window]   Fig. 8. Equation [5] is optimized fit after correcting for air encapsulation. Observed soil moisture probe storages with correction for air are superimposed.